Answer: b. Net income will decrease.
Step-by-step explanation:
The unavoidable fixed costs were being covered by the unprofitable segment so if the segment is removed, the unavoidable fixed cost will have to be deducted from the profits of the other segment/s.
When this happens their profit will decrease because those segments will now be covering more fixed costs than before. This is why it is usually better to keep an unprofitable segment going if it incurs unavoidable fixed costs.